Re: [Qemu-devel] [PATCH] block/curl: Improve type safety of s->timeout.

[Gonglei]

On 2014/10/28 22:29, Stefan Hajnoczi wrote:

> On Mon, Oct 06, 2014 at 03:32:10PM +0100, Richard W.M. Jones wrote:
>> qemu_opt_get_number returns a uint64_t, and curl_easy_setopt expects a
>> long (not an int).
>>
>> Store the timeout (which is a positive number of seconds) as a
>> uint64_t.  Check that the number given by the user is reasonable.
>> Cast it to long before calling curl_easy_setopt.
>>
>> Example error message after this change has been applied:
>>
>> $ ./qemu-img create -f qcow2 /tmp/test.qcow2 \
>>     -b 'json: { "file.driver":"https",
>>                 "file.url":"https://foo/bar";,
>>                 "file.timeout":-1 }'
>> qemu-img: /tmp/test.qcow2: Could not open 'json: { "file.driver":"https", 
>> "file.url":"https://foo/bar";, "file.timeout":-1 }': timeout parameter is too 
>> large or negative: Invalid argument
>>
>> Signed-off-by: Richard W.M. Jones <address@hidden>
>> ---
>>  block/curl.c | 8 ++++++--
>>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> Thanks, applied to my block tree:
> https://github.com/stefanha/qemu/commits/block
> 
> Stefan

Please don't, the patch had been posted v2 which is better:

[PATCH v2] block/curl: Improve type safety of s->timeout.
http://lists.gnu.org/archive/html/qemu-devel/2014-10/msg03112.html

Best regards,
-Gonglei